Minimally Invasive Glaucoma Surgery (MIGS) refers to a collection of newer surgical techniques designed to lower eye pressure in glaucoma with less trauma than traditional glaucoma surgeries. The goal of all glaucoma surgery is to prevent vision loss by reducing pressure inside the eye. MIGS achieves this by using tiny devices or microscopic instruments and very small incisions. Think of MIGS as a gentler approach – like using a delicate stent or drain opener, versus the older “big surgeries” that were more like creating a new drain entirely.

Because MIGS is less invasive, it typically has a faster recovery and lower risk of complications (such as severe bleeding or infection) compared to traditional surgeries like trabeculectomy. However, there is a trade-off: MIGS procedures usually provide a more modest pressure reduction, so they are ideal for early to moderate glaucoma or as an add-on to cataract surgery.

Patients often ask, “What are these MIGS devices exactly?” Examples include tiny tubes or stents such as the iStent and Hydrus that improve fluid outflow, or procedures like the Kahook Dual Blade goniotomy that remove a clogged portion of the eye’s drain. All are done through incisions only a few millimeters or less.

For the patient, MIGS can mean less dependence on eye drops and stable vision without undergoing a big operation. It’s important to note MIGS isn’t appropriate for very advanced glaucoma in many cases, since those situations may still need more aggressive surgery. But for many people, MIGS hits a “sweet spot” – enhancing pressure control with minimal disruption.

In summary, MIGS has revolutionized glaucoma care in the last decade, offering hope that glaucoma can be managed earlier and more safely.